/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:10:23,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:10:23,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:10:23,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:10:23,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:10:23,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:10:23,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:10:23,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:10:23,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:10:23,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:10:23,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:10:23,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:10:23,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:10:23,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:10:23,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:10:23,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:10:23,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:10:23,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:10:23,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:10:23,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:10:23,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:10:23,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:10:23,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:10:23,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:10:23,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:10:23,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:10:23,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:10:23,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:10:23,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:10:23,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:10:23,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:10:23,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:10:23,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:10:23,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:10:23,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:10:23,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:10:23,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:10:23,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:10:23,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:10:23,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:10:23,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:10:23,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:10:23,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:10:23,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:10:23,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:10:23,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:10:23,642 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:10:23,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:10:23,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:10:23,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:10:23,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:10:23,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:10:23,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:10:23,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:10:23,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:10:23,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:10:23,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:10:23,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:10:23,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:10:23,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:10:23,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:10:23,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:10:23,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:10:23,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:10:23,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:10:23,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:10:23,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:10:23,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:10:23,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:10:23,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:10:23,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:10:23,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:10:23,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:10:24,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:10:24,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:10:24,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:10:24,021 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:10:24,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49.c [2020-10-14 23:10:24,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/794fdb35a/62be72c223124796b412a2f6365d2d05/FLAG0bb13d947 [2020-10-14 23:10:25,044 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:10:25,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label49.c [2020-10-14 23:10:25,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/794fdb35a/62be72c223124796b412a2f6365d2d05/FLAG0bb13d947 [2020-10-14 23:10:25,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/794fdb35a/62be72c223124796b412a2f6365d2d05 [2020-10-14 23:10:25,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:10:25,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:10:25,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:10:25,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:10:25,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:10:25,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:10:25" (1/1) ... [2020-10-14 23:10:25,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6708ede7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:25, skipping insertion in model container [2020-10-14 23:10:25,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:10:25" (1/1) ... [2020-10-14 23:10:25,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:10:25,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:10:28,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:10:28,229 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:10:29,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:10:29,286 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:10:29,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29 WrapperNode [2020-10-14 23:10:29,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:10:29,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:10:29,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:10:29,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:10:29,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29" (1/1) ... [2020-10-14 23:10:29,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29" (1/1) ... [2020-10-14 23:10:29,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29" (1/1) ... [2020-10-14 23:10:29,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29" (1/1) ... [2020-10-14 23:10:29,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29" (1/1) ... [2020-10-14 23:10:29,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29" (1/1) ... [2020-10-14 23:10:29,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29" (1/1) ... [2020-10-14 23:10:29,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:10:29,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:10:29,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:10:29,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:10:29,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:10:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:10:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:10:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:10:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:10:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:10:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:10:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:10:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:10:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:10:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:10:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:10:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:10:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:10:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:10:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:10:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:10:43,172 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:10:43,172 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:10:43,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:10:43 BoogieIcfgContainer [2020-10-14 23:10:43,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:10:43,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:10:43,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:10:43,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:10:43,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:10:25" (1/3) ... [2020-10-14 23:10:43,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785feb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:10:43, skipping insertion in model container [2020-10-14 23:10:43,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29" (2/3) ... [2020-10-14 23:10:43,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785feb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:10:43, skipping insertion in model container [2020-10-14 23:10:43,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:10:43" (3/3) ... [2020-10-14 23:10:43,208 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label49.c [2020-10-14 23:10:43,220 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:10:43,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:10:43,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:10:43,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:10:43,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:10:43,281 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:10:43,281 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:10:43,281 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:10:43,281 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:10:43,281 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:10:43,282 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:10:43,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:10:43,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:10:43,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:10:43,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:10:43,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:10:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:10:43,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1344938646, now seen corresponding path program 1 times [2020-10-14 23:10:43,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:10:43,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320713786] [2020-10-14 23:10:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:10:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:43,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:43,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:10:43,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-14 23:10:43,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:43,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:10:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:10:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:10:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:10:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:10:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:44,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:44,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:44,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:10:44,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:44,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:10:44,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:44,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:44,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:44,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:10:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:10:44,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320713786] [2020-10-14 23:10:44,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:10:44,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:10:44,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855546327] [2020-10-14 23:10:44,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:10:44,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:10:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:10:44,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:10:44,189 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:11:17,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:11:17,256 INFO L93 Difference]: Finished difference Result 5057 states and 9518 transitions. [2020-10-14 23:11:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:11:17,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-14 23:11:17,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:11:17,312 INFO L225 Difference]: With dead ends: 5057 [2020-10-14 23:11:17,312 INFO L226 Difference]: Without dead ends: 3200 [2020-10-14 23:11:17,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:11:17,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2020-10-14 23:11:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3152. [2020-10-14 23:11:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3152 states. [2020-10-14 23:11:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 5019 transitions. [2020-10-14 23:11:17,544 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 5019 transitions. Word has length 48 [2020-10-14 23:11:17,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:11:17,546 INFO L479 AbstractCegarLoop]: Abstraction has 3152 states and 5019 transitions. [2020-10-14 23:11:17,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:11:17,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 5019 transitions. [2020-10-14 23:11:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 23:11:17,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:11:17,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:11:17,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:11:17,565 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:11:17,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:11:17,566 INFO L82 PathProgramCache]: Analyzing trace with hash 97377175, now seen corresponding path program 1 times [2020-10-14 23:11:17,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:11:17,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585328803] [2020-10-14 23:11:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:11:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:17,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:18,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:18,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 23:11:18,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:11:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-10-14 23:11:18,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:18,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:11:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:11:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:11:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:11:19,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:11:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:19,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:19,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:11:19,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:11:19,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:19,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:11:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:11:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:11:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:19,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:11:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:19,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:19,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:19,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:11:19,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:11:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 23:11:19,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:19,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:11:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:11:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:11:19,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:11:19,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585328803] [2020-10-14 23:11:19,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:11:19,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:11:19,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461625172] [2020-10-14 23:11:19,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:11:19,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:11:19,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:11:19,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:11:19,439 INFO L87 Difference]: Start difference. First operand 3152 states and 5019 transitions. Second operand 7 states. [2020-10-14 23:12:01,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:12:01,351 INFO L93 Difference]: Finished difference Result 9464 states and 15164 transitions. [2020-10-14 23:12:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:12:01,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-14 23:12:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:12:01,398 INFO L225 Difference]: With dead ends: 9464 [2020-10-14 23:12:01,399 INFO L226 Difference]: Without dead ends: 6318 [2020-10-14 23:12:01,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:12:01,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2020-10-14 23:12:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 6152. [2020-10-14 23:12:01,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6152 states. [2020-10-14 23:12:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 8721 transitions. [2020-10-14 23:12:01,611 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 8721 transitions. Word has length 119 [2020-10-14 23:12:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:12:01,612 INFO L479 AbstractCegarLoop]: Abstraction has 6152 states and 8721 transitions. [2020-10-14 23:12:01,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:12:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 8721 transitions. [2020-10-14 23:12:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 23:12:01,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:12:01,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:12:01,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:12:01,618 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:12:01,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:12:01,619 INFO L82 PathProgramCache]: Analyzing trace with hash -882591105, now seen corresponding path program 1 times [2020-10-14 23:12:01,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:12:01,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416960048] [2020-10-14 23:12:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:12:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:04,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 23:12:04,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:12:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2783 [2020-10-14 23:12:04,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:04,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:12:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:12:04,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:12:04,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:04,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:12:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:04,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:12:04,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:12:04,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:04,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:12:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:12:04,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:12:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:04,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:04,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:04,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:12:04,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:04,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 23:12:04,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:04,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:12:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:12:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:12:04,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:12:05,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416960048] [2020-10-14 23:12:05,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:12:05,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:12:05,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514613142] [2020-10-14 23:12:05,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:12:05,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:12:05,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:12:05,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:12:05,073 INFO L87 Difference]: Start difference. First operand 6152 states and 8721 transitions. Second operand 7 states. [2020-10-14 23:13:13,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:13:13,557 INFO L93 Difference]: Finished difference Result 18728 states and 26869 transitions. [2020-10-14 23:13:13,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:13:13,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-14 23:13:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:13:13,630 INFO L225 Difference]: With dead ends: 18728 [2020-10-14 23:13:13,630 INFO L226 Difference]: Without dead ends: 12582 [2020-10-14 23:13:13,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:13:13,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2020-10-14 23:13:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 12345. [2020-10-14 23:13:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12345 states. [2020-10-14 23:13:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12345 states to 12345 states and 15954 transitions. [2020-10-14 23:13:13,971 INFO L78 Accepts]: Start accepts. Automaton has 12345 states and 15954 transitions. Word has length 149 [2020-10-14 23:13:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:13:13,974 INFO L479 AbstractCegarLoop]: Abstraction has 12345 states and 15954 transitions. [2020-10-14 23:13:13,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:13:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 12345 states and 15954 transitions. [2020-10-14 23:13:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 23:13:13,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:13:13,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:13:13,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:13:13,977 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:13:13,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:13:13,977 INFO L82 PathProgramCache]: Analyzing trace with hash -742626705, now seen corresponding path program 1 times [2020-10-14 23:13:13,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:13:13,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949890217] [2020-10-14 23:13:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:13:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:15,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:15,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 23:13:15,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:13:15,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1264 [2020-10-14 23:13:15,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:15,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:13:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:13:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 23:13:15,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:13:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:15,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:15,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:15,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:13:15,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:13:15,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:15,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:13:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:13:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:13:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:15,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:13:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:15,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:15,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 23:13:15,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:15,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 23:13:15,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:15,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:13:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:13:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 23:13:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:13:15,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949890217] [2020-10-14 23:13:15,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:13:15,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:13:15,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272857408] [2020-10-14 23:13:15,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:13:15,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:13:15,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:13:15,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:13:15,783 INFO L87 Difference]: Start difference. First operand 12345 states and 15954 transitions. Second operand 7 states. [2020-10-14 23:14:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:14:13,182 INFO L93 Difference]: Finished difference Result 36957 states and 48968 transitions. [2020-10-14 23:14:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:14:13,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-14 23:14:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:14:13,273 INFO L225 Difference]: With dead ends: 36957 [2020-10-14 23:14:13,273 INFO L226 Difference]: Without dead ends: 24618 [2020-10-14 23:14:13,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:14:13,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24618 states. [2020-10-14 23:14:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24618 to 24363. [2020-10-14 23:14:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24363 states. [2020-10-14 23:14:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24363 states to 24363 states and 29760 transitions. [2020-10-14 23:14:13,937 INFO L78 Accepts]: Start accepts. Automaton has 24363 states and 29760 transitions. Word has length 157 [2020-10-14 23:14:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:14:13,939 INFO L479 AbstractCegarLoop]: Abstraction has 24363 states and 29760 transitions. [2020-10-14 23:14:13,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:14:13,939 INFO L276 IsEmpty]: Start isEmpty. Operand 24363 states and 29760 transitions. [2020-10-14 23:14:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 23:14:13,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:14:13,946 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:14:13,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:14:13,946 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:14:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:14:13,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1796753945, now seen corresponding path program 1 times [2020-10-14 23:14:13,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:14:13,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195455815] [2020-10-14 23:14:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:14:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:18,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:18,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 23:14:18,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:14:18,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:14:18,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:18,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:18,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:14:18,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:14:18,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 23:14:18,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:14:19,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:14:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:19,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:19,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:14:19,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:14:19,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:14:19,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:19,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:14:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:14:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:14:19,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:14:19,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:14:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:19,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:19,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:19,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:19,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:14:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:14:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-14 23:14:19,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:19,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:14:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:14:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 23:14:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:14:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 23:14:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:19,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:19,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:14:19,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:14:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 23:14:19,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:19,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:14:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:14:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:14:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:14:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 83 proven. 66 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:14:19,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195455815] [2020-10-14 23:14:19,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:14:19,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:14:19,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788880901] [2020-10-14 23:14:19,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:14:19,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:14:19,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:14:19,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:14:19,913 INFO L87 Difference]: Start difference. First operand 24363 states and 29760 transitions. Second operand 8 states.